If element X has 31 protons, how many electrons does it have?

A resistor, an inductor, and a capacitor are connected in series to an AC source. What is the condition for resonance to occur? The resistance must be equal to both the inductive reactance and the capacitive reactance.

What is M=35g, V=17cm³

Which is an example of an open system? A. The carbon cycle B. The water cycle C. The universe D. A food web

The only seaweed in the open ocean of the north atlantic ocean is

Which of the following situations would produce an average velocity of zero? A) a round-trip to school and back B) a horse galloping in a field C) the criss-crossing path of a flying bug D) a trip, first to the moon, then onto Mars

What is the momentum of a 2 kg ball traveling at 2m/s

A constant force is exerted for a short distance on a block of mass that is initially at rest on a horizontal frictionless plane. This force gives the block a certain final speed v.

A football quarterback is moving straight backward at a speed of 3.00 m/s when he throws a pass to a player 20.0 m straight downfield. (a) if the ball is thrown at an angle of 25.

Simone is walking her dog on a leash. The dog is pulling with force of 34 N to the right and simone is pulling backward with a force of 16 N

An object moves with velocity v (t) = t^2-8t+7 a) write a polynomial expression for the position of the particle at any time t greater or equal to zero.